Extensible bracelet.



PATENTED JAN. 15, 1907.

A. D. CROSBY. EXTENSIBLE BRACELET.

APPLICATION FILED MAY 21. 1906.

J Z W ALFRED D. CROSBY, OF ATTLEBORO, MASSACHUSETTS, ASSIGNOR TO P. J. CUMMINGS COMPANY, OF

CORPORATION.

ATILEBORO, MASSACHUSETTS, A

EXTENSlBLE BRACELET.

Specification of Letters Patent.

Patented Jan. 15, 1907.

Application filed May 21, 1906- Serial No. 318,065.

To all whom, it may concern:

Be it known that I, ALFRED D. CROSBY, a citizen of the United States, residing at Attleboro, in the county of Bristol and State of Massachusetts, have invented certain new and useful Improvements in Expansible Bracelets, of which the following is a specification.

This invention relates to bracelets for personal wear, and pertains especially to the class of flexible or expansible bracelets. In this class of bracelets the prevailing type employ what is known as lazy-tong levers, while others omit the lazy-tong arrangements and, for example, employ elongated links each containing a plate-spring having a finger at each end connecting the links flexibly; but the objections and disadvantages found in such forms of bracelets are various and well known.

It is therefore the purpose of this invention to provide a bracelet not of said forms, but of such construction and arrangement of parts as to fully overcome said objections and disadvantages.

The object of the invention is to provide in an expansible bracelet certain novel and eculiar mechanism concealed within the links of the bracelet for contracting and expanding the bracelet at the will of the wearer.

A further object of the invention is to provide in an expansible bracelet hollow or shell links which contain spring-controlled cranks and cormecting-arms held by the links and 5 pivoted with the cranks to retract the links.

A still further object of the invention is to v rovide in an expansible bracelet having holow links a pair of connected arms loosely held by the links and a pair of spring-controlled cranks pivoted in said links, each of the cranks having one of the said arms pivoted thereto.

Viith these and various other objects, advantages, and improved results in view the braceletdinks comprising cranks pivoted to each end of a stud within the links, a spring carried by each stud to control the cranks, and arms having one end fixed. together within the links and pivoted to the cranks within the next link.

In the accompanying drawings, forming part of this application, Figure 1 is an edge view of a bracelet embodying this invention.

invention consists in a flexible connection for Fig. 2 is a similar view, partly broken away, showing the bracelet partly expanded. Fig. 3 is a detail sectional view of a pair of links, showing their contained mechanism in elevation. Fig. 4 is a similar view showing the parts in movable position. Fig. 5 is an enlarged sectional view on the line m cc, Fig. 4. Fig. 6 is a perspective view of part of a link and its arms. Fig. 7 is a perspective view of one of the cranks. Figs. 8 and 9 are perspective views of modifications.

The same reference-numerals denote the same parts throughout the several views of the drawings.

The links may be of any desired material, thickness, length, and width and have adj acent sides beveled or inclined su'fliciently to produce a circular-shaped bracelet without exposing any mechanism when in retracted or wearing position and to have the bracelet conform with the shape of the hand in slipping it over the latter. These links 1 are hollow or shell-like and have slots 2 in their beveled sides for the connecting-arms 3, which. are connected together in the links 1 by a cross-bar 4, having its abutment against the inner face of the sides of the links 1, so that the arms 3 project from one of said links through the slots into the next link, the slots being of suflicient width to allow the arms to swing and slide in the slots, thus forming a loose connection between the links and the arms. The links 1 are provided with a central pivot-stud 5, each end of which has pivoted thereto a crank 6, having a pivot projection or prong 7. A spiral spring 8 is carried by the studs 5 between each pair of cranks, and the ends of the springs bear against said prongs to retract the links. The arms extend from one link where they are held by the bar 4 into the adjacent link where they are pivoted to the pivot-prongs 7. The cranks 6 project from their pivot-stud, one in the opposite direction to the other, and the pivot-prongs project in opposite directions at right angles to their cranks. In this arrangement the pivots are of equal distance from the pivot-stud, the connecting-arms parallel, and one of the cranks is above its connecting-arm and the other crank is under its connecting-arm, leaving a space between the cranks for the spring. The bar which joins the connecting-arms being shorter than the distance between the pivot-points or ends of the arms, thelatter do not engage said bar, nor is there interference or engagement of the cranks or of the arms.

In the modifications shown in Figs. 8 and 9 the arm 10 is hinged to cars 11 and has a pivot-pin 12 to fit holes 13 in the cranks 14:. The ends of the spring 15 have their bearing on the edge of the cranks.

Bracelet-links connected according to this invention afford a hinge movement of the links perpendicular to the sliding movement of the connecting-arms and the swinging movement of the cranks.

It is obvious that neck-links, belt-links, and links of various kindred articles maybe flexibly connected by the device herein shown and described, and in the practical application of the link connections various detail changes of construction are contemplated without departing from the spirit of the invention.

Having thus described my invention, what claim as new, and desire to secure by Letters Patent, is

1. An expansible bracelet, comprising separate links each provided with a central stud, spring-controlled cranks pivoted to the studs, and arms held by the links and. pivot ed to the cranks in the adjacent links to fleXibly connect the links.

2. An expansible bracelet, comprising separate links having their adjacent sides slotted and eachhaving a central stud, springcontrolled cranks one pivoted to each end of each stud, and each having arms connected in pairs and held by the link and pivoted to the cranks in the adjacent link to flexibly connect the links.

3. In an expansible bracelet, the combination, with suitable links having slotted sides, and a stud in each link, of the cranks each pivoted on each stud with a space between them, a spring in said space to control the cranks, and the connecting-arms held by the links and pivoted to the cranks in the adjacent links andadapted to swing and slide in said slots.

4. In an expansible bracelet, the combination, with the hollow links each having a pair of slots in two sides thereof, a stud central of each link, and a spring surrounding each of the studs, of a pair of cranks pivoted on each stud and having prongs engaged by the free ends of the springs, and a pair of arms connected together at one end in each link and each having the other end pivoted to a prong in an adjacent link.

5. In an expansible bracelet, the combination, with suitable links having slotted sides, of a pair of cranks pivoted in each link with a space between the cranks of each pair, a prong projecting from each crank, a spiral spring in each space with its ends engaging the prongs, held by each link and in an adjacent link.

6. The combination, with the links each having a pivot-stud therein and slots or openings in their adjacent sides, of the connectingarms working loosely through the slots and secured together at one end in pairs within the links to permit the latter to swing and to slide apart, a pair of cranks pivoted to each stud with a space between the cranks of each pair and each crank having a prong to which the other ends of the arms are pivoted, and a spiral spring heldby each stud in each of said spaces and having ends engaging said prongs to retract the links.

7. The combination in a bracelet, ofa series of connected links each having a pair of slots in two sides thereof, and a stud in each link,

pivoted to the prongs with a pair of cranks mounted on each stud and projecting therefrom in opposite directions, a spring located between the cranks of each pair and bearing thereon, and the arms having a swinging connection at one end with the links and pivoted at the other end to the cranks, substantially as set forth.

8. The combination, with a bracelet-link, a central stud in the link, and a pair of arms adapted to connect a like link to the said link. of two cranks loosely mounted one on each end of the stud and having said arms pivoted thereto, and a spring carried by the stud between the cranks and having its free ends engaging the said cranks, substantially as set forth.

In witness whereof I hereunto set my hand in the presence of two witnesses.

ALFRED D. CROSBY. Witnesses:

RALPH O. EsTEs, MYRA H. STONE.

and a pair of connecting-arms 

